package com.uni.filters;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class AuthGuard implements Filter {

	@Override
	public void destroy() {}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest)arg0;
		if(isValidRequest(request.getRequestURI().substring(request.getContextPath().length() + 1).split("/")[0])){
			if( request.getSession().getAttribute("profile") == null ){
				HttpServletResponse response = (HttpServletResponse)arg1;
				response.sendRedirect(request.getContextPath() + "/login");
				response.setStatus(301);
			} 
		}
		arg2.doFilter(arg0, arg1);
	}
	
	private boolean isValidRequest(String uri){
		System.out.println(uri);
		return uri.equals("user") | uri.equals("group") | uri.equals("");
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {}

}
